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Your Home Safe May Stop Burglars. But Only a Fireproof Safe Protects Valuables from Extreme Heat
Tom Price · 2023-10-21 · via Latest Content - Popular Mechanics

Waterproof and Fireproof Safe Box

Pros

  • Waterproof protection up to 8 inches
  • Lifetime warranty

Cons

  • Keypad and internal lights require batteries

As you’ll see throughout this list, we believe in SentrySafe as a top brand for fireproof safes—for its lifetime warranty, $50,000 fire protection guarantee, and reliably high levels of fire protection across all products. This mid-sized, 1.23-cubic-foot option is the perfect choice for most people.

Alongside a fire rating of up to 1,700 degrees F for a full hour, the safe boasts a fully waterproof design that protects internal items completely for up to 24 hours in up to 8 inches of submerged water.

Beyond the powerful protection it offers, the fireproof safe also has internal organization features like key hooks, a shelf, and a lockable drawer for especially valuable items. The interior of the safe is even lit to help you see inside. That said, both the lights and the digital keypad are battery-operated, so you'll need to periodically replace them.

The safe, as a whole, weighs close to 90 pounds. While this is a great deterrent from a thief trying to simply steal the entire safe, it can make it quite difficult install or carry up stairs on your own.

Key Specs

Size1.23 cu. ft.
Dimensions19.3 x 16.3 x 17.8 in.
Weight86.69 lb
Lock TypeDigital keypad
Fire RatingUL Classified for 1 hour at 1700 F

Fire Resistant Security Safe

Pros

  • Large, spacious interior
  • Digital keypad and manual key

Cons

  • Much lower temperature rating

As an affordable yet durable alternative to some of the higher-end models on our list, this safe from Amazon Basics checks a lot of our boxes. At 1.24 cubic feet, it's actually slightly larger than our Best Overall choice from SentrySafe, leaving you with just as much space inside, including a top shelf for organization.

The safe also comes with a digital keyboard for easy access. If the keyboard is damaged during a fire, the safe also comes with a backup emergency key that unlocks the mechanism manually.

The biggest detractor for this safe is its durability. The safe is only rated to handle up to 1,200 F for 20 minutes. This is considerably lower than many other safes on this list both in temperature and duration.

Key Specs

Size1.24 cu. ft.
Dimensions13.8 x 14.17 x 19.67 in.
Weight66.97 lb
Lock TypeDigital keypad
Fire RatingUL Classified for 20 minutes at 1200 F

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Fireproof Waterproof Safe

Pros

  • Multiple options for valuables storage
  • Can drop up to 15 feet without breaking or opening

Cons

  • Old-school dial combination lock is cumbersome to use

If you require more space and organization than our previous recommendations, this safe provides plenty. With over 2 cubic feet of space, there is significantly more room to store larger valuables, such as photo albums or antiques.

Furthermore, the internal organization boasts a top tray and a large bottom drawer, as well as key hooks and a small storage cubby on the door. Unlike other models on this list, the safe uses a dial lock which doesn't require batteries, but it can be cumbersome to use.

Like all SentrySafe models, this one will protect your items for up to an hour at 1,700 F and prevent moisture damage for 24 hours in 8 inches of water. This impressive durability extends to the outer strength of the safe, as well, which can handle a fall from 15 feet without significant damage. Because of its size and strength, the safe weighs a hefty 125 pounds.

Key Specs

Size2.05 cu. ft.
Dimensions18.6 x 19.3 x 23.8 in.
Weight125 lb
Lock TypeCombination
Fire RatingUL-classified for 1 hour at 1700 F

Best Seller

Fireproof Waterproof File Folder and Document Safe

Pros

  • Interior folders for documents
  • Waterproof for up to 72 hours

Cons

  • Difficult to move around considering its size

Unlike the more traditional safes we recommend, this option from SentrySafe functions more like a secure file cabinet than a traditional safe. The chest holds up to 40 hanging files for easy document organization and has a small space on the lid for handheld items like passports or electronics.

While the safe gives up some fire protection compared to the classic options on our list (it’s rated for 30 minutes at 1,550 degrees), it more than makes up for this with its robust water protection. The file storage box can be fully submerged in water for up to 72 hours without the items inside seeing any water damage at all.

At 39 pounds, this safe is slightly more portable than the bulkier home options, though it is still relatively cumbersome to transport given the lack of handles or wheels.

Key Specs

Size.65 cu. ft.
Dimensions13.5 x 15.5 x 14.3 in.
Weight39 lb
Lock TypeKey
Fire RatingUL Classified for 30 minutes at 1550 F

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Diamond Fireproof Waterproof Safe

Pros

  • Superior fire, water, and smoke protection
  • CA DOJ-certified for firearm storage
  • LED lighting

Cons

  • Not designed to be bolted to the ground

This Sanctuary model stands out as the gold standard for fire protection. It’s capable of withstanding a blistering 1,800 F for 90 minutes. That makes it the best home safe to protect your valuables from the extreme heat of wildfires.

Additionally, with ETL-rated waterproofing, it can hold out for 7 days in up to 6 inches of standing water. The company also provides a lifetime warranty against fire, natural flood, and theft.

The LED-lit interior has two upholstered shelves and is California DOJ-certified for firearm storage. For security, the electronic lock has a timed lockout mode and tamper indicator. You can also enable an optional silent entry mode for added discretion.

Once you get this compact safe situated, at over 62 pounds, it’s not likely you’ll want to move it again. But, its sturdiness and heavy-duty construction are worth the extra money.

Key Specs

Size1.32 cu. ft.
Dimensions17.5 x 15 x 14.5 in.
Weight62.2 lb
Lock TypeElectronic, Key
Fire RatingUL Classified for 90 minutes at 1800 F

Small Safe Box Chest

Pros

  • Fireproof and waterproof
  • Portable design makes it great for traveling

Cons

  • Interior space too small for larger items you may want to store

If you’ve been searching for something more portable, this chest-style safe from Honeywell offers impressive fireproof protection that you can take with you anywhere. So every night you spend away from home, you can still keep valuables under lock and key.

The chest is rated to handle up to 1,550 F for 30 minutes, which, while lower than many options on this list, should be solid enough to keep your items safe in all but the most extreme situations. The safe is also completely waterproof, so any documents or delicate items should survive, even if the chest is floating in water.

While we love this as a portable option or for small items, the lack of space for things beyond a passport, a few papers, and small jewelry pieces leaves something to be desired.

Key Specs

Size0.15 cu. ft.
Dimensions9.8 x 12.4 x 7.3 in.
Weight19.2 lb
Lock TypeKey
Fire RatingUL Classified for 30 minutes at 1550 F

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Fireproof Safe with Key Lock

Pros

  • Comes with bolt-down kit for anchoring
  • Has a carrying handle to bring with you

Cons

  • No internal organization

If you only need to protect a few small items, like your passport, a USB drive, and some jewelry, there’s no need to invest in such a large safe. This lock box safe from SentrySafe is small enough to be hidden away on a shelf in your closet, but it doesn’t sacrifice fire protection in the name of being compact.

Rated to handle up to 1,550 degrees F for up to 30 minutes, the lock box should be able to withstand house fires without much issue. The carrying handle also makes it easy to take this safe with you if you are evacuating the fire quickly.

Of course, because of its small size, there’s no internal organization. Everything just sits in the same compartment. But it’s not a feature-less safe. If you are interested in additional theft prevention, it comes with a bolt-down kit for securing the safe to your floor.

Key Specs

Size0.18 cu. ft.
Dimensions6.1 x 14.3 x 11.2 in.
Weight13 lb
Lock TypeKey
Fire RatingUL Classified for 30 minutes at 1550 F

Fire Safe

Pros

  • Biometric fingerprint scanner
  • Comes with a removable interior tray

Cons

  • Fire rating is not certified from UL

For security beyond just the physical integrity of the safe, the Mycube offers a biometric fingerprint scanner as the primary way to unlock its door. The safe saves up to 10 unique fingerprint IDs, so you can program it to open for you and your immediate family with ease.

If someone else needs access to the safe, you can also program a backup password they’ll enter from the digital keypad. Internally, the safe has a removable drawer for storing documents, small valuables, and watches. This also leaves the main compartment of the safe open for larger items.

The Mycube fire safe is quite durable with the company claiming it is capable of withstanding 1,700 F for up to an hour. Its worth noting that Mysafe does not use UL for its fire rating, though the company does report that the rating it has would be the equivalent of one from UL.

Key Specs

Size0.51 cu. ft.
Dimensions12.5 x 15.6 x 14.4 in.
Weight64 lb
Lock TypeBiometric fingerprint scanner, digital keypad
Fire RatingRated for 60 minutes at 1700 F

Headshot of Tom Price

Tom Price is a reviews editor for Popular Mechanics while also contributing to Runner's World, Best Products, and Bicycling. Here at Popular Mechanics, Tom loves testing out home appliances, smart tech, gear for city life and outdoor adventures, small gadgets like watches and multitools, and anything else you can find piled up at his hoarder's nest of a desk.

Prior to working here, Tom attended NYU, graduating with a degree in English and a minor in creative writing. He also wrote for Best Reviews, The Daily Beast, and other publications covering tech, fitness gear, gadgets, and lifestyle products. Furthermore, he covered startup news, pop culture, and even professional wrestling. To follow more of his work, check back here for new stories.

Headshot of John Gilpatrick

John Gilpatrick is a Senior Reviews Editor for Popular Mechanics, covering tools, home appliances, yard and garden accessories, and smart home tech. He previously worked for Men’s Health and has bylines on numerous other websites, covering topics as disparate as nutrition, tech, and pet care. He is also a former film critic who’s unusually fond of the Star Wars prequels, and he appeared on Pop Culture Jeopardy in 2025 while wearing jorts and a fanny pack. He is a member of the Online Film Critics Society (OFCS).